zloader | 8d1cba212e338195e1edb8d4e4dde560fd9a36c0d177d6f5419e4e4e5e5c5b3d

General

Target

zloader 2_1.0.9.0.vir.exe
Size

151KB
MD5

bb7433758b61eb6483579bdae17392cf
SHA1

4a007e1c530cdd23f9ea800f0530f4da6a5d7080
SHA256

8d1cba212e338195e1edb8d4e4dde560fd9a36c0d177d6f5419e4e4e5e5c5b3d
SHA512

e769b53220e4680f751fdb6041b8bdaf8119870cb1b427664284ec7530eb1107956f6299a8bd1e84ca3f3c959acdf60a359715d72bb21615f069ee6e7f0d6e67

Score

10^/10

trojan botnet zloader persistence

Malware Config

Extracted

Family

zloader

Botnet

nder

Campaign

fallout

C2

https://ifjedssofllvcr.com/jbYm9bt/NlGkb4ivk.php

https://isfjiaaodwsoi.com/jbYm9bt/NlGkb4ivk.php

https://mslfiedjssfdes.com/jbYm9bt/NlGkb4ivk.php

https://sifeiwdjiesde.com/jbYm9bt/NlGkb4ivk.php

https://sldeodjiweiswi.com/jbYm9bt/NlGkb4ivk.php

rc4.plain

Signatures

Zloader, Terdot, DELoader, ZeusSphinx
Zloader is a malware strain that was initially discovered back in August 2015.
trojan botnet zloader
Blacklisted process makes network request 3 IoCs

Processes:

msiexec.exe

flow pid process

19 1636 msiexec.exe
20 1636 msiexec.exe
22 1636 msiexec.exe

flow	pid	process
19	1636	msiexec.exe
20	1636	msiexec.exe
22	1636	msiexec.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

msiexec.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\Software\Microsoft\Windows\CurrentVersion\Run	msiexec.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\Software\Microsoft\Windows\CurrentVersion\Run\Fiehb = "C:\\Users\\Admin\\AppData\\Roaming\\Odbyci\\ubucb.exe"	msiexec.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

zloader 2_1.0.9.0.vir.exe

description pid process target process

PID 1100 set thread context of 1636 1100 zloader 2_1.0.9.0.vir.exe msiexec.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

msiexec.exe

description pid process

Token: SeSecurityPrivilege 1636 msiexec.exe
Token: SeSecurityPrivilege 1636 msiexec.exe

description	pid	process	target process
PID 1100 set thread context of 1636	1100	zloader 2_1.0.9.0.vir.exe	msiexec.exe

description	pid	process
Token: SeSecurityPrivilege	1636	msiexec.exe
Token: SeSecurityPrivilege	1636	msiexec.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

zloader 2_1.0.9.0.vir.exe

description	pid	process	target process
PID 1100 wrote to memory of 1636	1100	zloader 2_1.0.9.0.vir.exe	msiexec.exe
PID 1100 wrote to memory of 1636	1100	zloader 2_1.0.9.0.vir.exe	msiexec.exe
PID 1100 wrote to memory of 1636	1100	zloader 2_1.0.9.0.vir.exe	msiexec.exe
PID 1100 wrote to memory of 1636	1100	zloader 2_1.0.9.0.vir.exe	msiexec.exe
PID 1100 wrote to memory of 1636	1100	zloader 2_1.0.9.0.vir.exe	msiexec.exe
PID 1100 wrote to memory of 1636	1100	zloader 2_1.0.9.0.vir.exe	msiexec.exe
PID 1100 wrote to memory of 1636	1100	zloader 2_1.0.9.0.vir.exe	msiexec.exe
PID 1100 wrote to memory of 1636	1100	zloader 2_1.0.9.0.vir.exe	msiexec.exe
PID 1100 wrote to memory of 1636	1100	zloader 2_1.0.9.0.vir.exe	msiexec.exe

C:\Users\Admin\AppData\Local\Temp\zloader 2_1.0.9.0.vir.exe
"C:\Users\Admin\AppData\Local\Temp\zloader 2_1.0.9.0.vir.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1100

C:\Windows\SysWOW64\msiexec.exe
msiexec.exe
2⤵
- Blacklisted process makes network request
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
PID:1636

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1636-0-0x00000000000B0000-0x00000000000DB000-memory.dmp

Filesize
172KB

Download
memory/1636-1-0x00000000000E0000-0x00000000000E1000-memory.dmp

Filesize
4KB

Download
memory/1636-2-0x00000000000B0000-0x00000000000DB000-memory.dmp

Filesize
172KB

Download
memory/1636-3-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing